Private investigator services in New Jersey are governed by the N.J.S.A. 45:19-8 et seq. (Private Detective Act of 1939) and regulated by the New Jersey State Police — Private Detective Unit. A state-level license is required to operate as a private investigator for compensation in New Jersey.
Quick Facts: New Jersey PI Licensing
| License required | Yes |
| Licensing authority | New Jersey State Police — Private Detective Unit |
| Governing statute | N.J.S.A. 45:19-8 et seq. (Private Detective Act of 1939) |
| Official license lookup | https://www.njsp.org/private-detective/ |
| Authority website | https://www.njsp.org/private-detective/ |
| Last reviewed | 2026-05-17 |
Verifying a PI's License in New Jersey
Before retaining any private investigator in New Jersey, verify the individual’s license is active and in good standing. The New Jersey State Police — Private Detective Unit maintains a public license search at https://www.njsp.org/private-detective/. Search by the individual’s name or company name; the record will show the license number, status, and any disciplinary history on file.
What This Means for Hiring
New Jersey’s licensing requirement means the investigator you hire has, at minimum, completed the state’s training and background screening process. It does not guarantee competence on your specific case — surveillance, family-court, corporate, and skip-trace work each demand specialized experience. When evaluating a New Jersey PI, ask about case-type specialization, evidentiary chain-of-custody process, and prior testimony in the jurisdiction where your matter is pending.
Reference: All 50 States + DC
For licensing requirements in other jurisdictions, see the full PI licensing reference map.